Quotes
Riff-Raff: Frank-N-Furter, it's all over. Your mission is a failure. Your life style's too extreme. I'm your new commander. You are now my prisoner. We return to Transylvania. Prepare the transit beam.
Mistakes
After the "Time Warp" while they are showing the characters lying on the floor, you can see Janet starting to say her lines in the background. See more...
Trivia
At one point on set, the cast had an off-camera Easter egg hunt. Some were never found, apparently, because you can see at least three of the eggs: one under Frank-N-Furter's throne, one in the main hall in place of the light, and another you can see when they are going up to the lair in the elevator. See more...
Movie Mistakes blog
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Other great sites
The Rocky Horror Picture Show (1975) - 1 easter egg
Directed by Jim Sharman, starring Barry Bostwick, Charles Gray, Christopher Biggins, Meat Loaf, Richard O'Brien, Susan Sarandon, Tim Curry (add more)
Easter eggs are hidden bits on DVDs which if you know where to look can provide all sorts of fun extras.